Air Control - Honeywell Krom Schroder BCU 580 Technical Information

Air control

4 Air control
A central protective system such as the FCU 500 takes
over air control. It monitors the static air pressure as
well as the air volume required for pre-purge, start-up
and after the furnace has been shut down. The air ac-
tuators (BCU..F1 = actuators IC 20/40, BCU..F2 = RBW
actuators, BCU..F3 = valve) are actuated for this pur-
pose by the capacity control system of the BCU.
After being enabled by the protective system, the BCU
can start the burners. The capacity is controlled during
operation by an external temperature control system.
PZL PZH PZ
DG DG VAS DG
DG DG
min max
49 49 50 50 15 15 14 14 13 13
46 46
45 45
ϑ ϑ
1 1
p /2
u
2 2
µC µC
P P
3 3
>750° >750°
FCU 500..F0
FCU 500..F0
58 58 STM 47 48 47 48
DL DL DL DL
min min Purge Purge
M M
PZL PZL PDZ PDZ
DG DG DG DG
BCU 580 · Edition 11.15l
VAS
BCU 580..F3 BCU 580..F3
VAS
VAS
VAS VAG
VR..L VR..L
BCU 580..F3 BCU 580..F3
VAS
VAS VAG
VR..L VR..L
TE
M
25